Was put on remeron 30 mg, 4 mg Valium, . 2 mg clonidine, 6 mg melatonin and 50 mg Benadryl (diphenhydramine) for chronic insomnia spaced apart by an hour. Is this a lot?

Yes. It is not a good idea to mix all these drugs together since no one really knows what the outcome of the interaction may be given some many variables. If you have had so much problem falling asleep, consider getting a sleep study which may reveal the cause.
Need new doctor. Your history is not complete. Are you being treated for depression? So many drug interaction between remeron,valium & clonidine. Melatonin & benadryl (diphenhydramine) can be tried. Get a virtual consult from one of Health Tap psychiatrists right now.
Ans. Wow what are you doing? Insomnia is a true diagnosis that requires evaluation to see if you meet the elements. Get off this medication. Valium may be a problem. Start with relaxation sheets and sleep log .